Satellite Transponders vs MagMapper!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Satellite Transponders
Access a comprehensive database of global TV satellites and their parameters. Easily search for channels, providers, and satellite information, and manage your favorites. An optional professional version offers advanced features like augmented reality and smart searching.
- Global satellite database
- Search by channel, satellite, radio, provider
- Display channel, radio, provider details
- Frequency, polarization, FEC, Symbol Rate display
- Favorites list
- Augmented reality (Pro version)
- Smart searching with sound (Pro version)
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This program is a data base of all TV satellites in the world. You can easily find a satellite parameters. Features: - Sort by satellite - Search by channel name, satellite name, radio name, provider name - Displaying the channel name, radio station, a provider with the link to the official site, encoding display - Displaying a frequency, polarization, FEC and Symbol Rate - List of favorites - Available in-app purchases of professional version An enormous data base. More than 12,800 video channels, 3900 radio stations and 180 Internet service providers *** 4in1 in-app purchase - Augmented reality - Smart searching with sound indication - Sorting by frequency - Satellite calculator Available professional version SatFinder PRO with augmented reality feature at https://itunes.apple.com/us/app/satfinder-pro/id523233755
MagMapper!
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MagMapper: Locate Abandoned Well Casings with Your Smartphone In the United States, hundreds of thousands of oil and gas wells have been abandoned or “orphaned”. Locating these wells is the first step towards properly plugging them, but traditional geophysics survey equipment is expensive and requires specific training to use. MagMapper puts well-detection technology in your pocket. With a simple walking survey, MagMapper utilizes the magnetometer built into your phone to create a magnetic anomaly map. With no additional hardware you can detect buried well casings. How it Works Walk a grid pattern over the desired survey area with the MagMapper app running. The app logs magnetometer readings and GPS position, then processes that data into a magnetic intensity map. Steel well casings create distinctive magnetic anomalies allowing users to pinpoint well locations from the walking survey. Who it’s for State and Federal agencies conducting field surveys and orphaned well inventories Landowners looking for undocumented wells on their property Environmental Research and Field Technicians Citizen Scientists! Key Features Real-time magnetic field visualization GPS tagged survey data for mapping Exportable survey data for further analysis (CSV file) Gamification Leaderboard: Compare your contributions with other citizens. Climb the leaderboard by completing quality surveys Achievements & Badges- Earn badges for milestones like completing your first survey, finding anomalies, or becoming a top contributor. Activity Scoring- Your activity score reflects both the quantity and quality of your surveys. Stay active to maintain your ranking! MagMapper has been compared against research grade magnetometer equipment, including helicopter and ground-based magnetometer surveys to evaluate detection accuracy and appropriate survey line spacing. The MagMapper project is funded by the U.S. Department of Energy (CATALOG program) MagMapper is developed by the CIRES MagMapper team at the University of Colorado Boulder. Website: https://www.magmapper.app/
Screenshots
Verdict
The clearest difference is in-app purchases: MagMapper! at none against Satellite Transponders's 1. MagMapper! also leads on update cadence (every 5 days vs every 4 months). Satellite Transponders's advantage is iOS requirement (11.0 vs 17.6). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Satellite Transponders sells 1 one-off in-app purchase. MagMapper! asks for nothing beyond the download.
Satellite Transponders ships an update every 4 months, MagMapper! every 5 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | Satellite Transponders | MagMapper! |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (292 ratings) — better | — |
| Positive reviews | 57.9% of reviews | — |
| Number of ratings | 292 — better | — |
| Update frequency | Every 4 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 8 MB | 144 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuriy Kvasha | University of Colorado Boulder |
Bugs and requests
Satellite Transponders
Reported bugs
3 issues- Compass not working on iOS 9 devices
- Incorrect transponder frequencies listed for some channels
- Satellite search not working as expected
Requested features
4 requests- Ability to filter by satellite type (C-band, Ku-band, etc.)
- Option to sort channels by frequency
- Satellite coverage maps for current location
- HD channel identification
MagMapper!
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Satellite Transponders
- Professional package$2.99
MagMapper!
No in-app purchases
Questions
Is Satellite Transponders free?
Is MagMapper! free?
Do Satellite Transponders or MagMapper! have ads?
Which is updated more often, Satellite Transponders or MagMapper!?
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